How Big is Gulf Oil spill?

Some scientists say the true amount of crude escaping into the Gulf of Mexico could be much higher than BP's estimate of 5,000 barrels of oil per day. Jon Decker reports.

This transcript has been automatically generated and may not be 100% accurate.

... the key question many are asking along the U S Gulf Coast just how much oil is leaking into the goal each day ... some scientists say the true amount of crude escaping could be much higher ... than the five thousand barrels of oil per day ... BP says is leaking from its offshore oil well ... that settles is the peas chief operating officer says the very beginning we've said it's highly uncertain the two things we can do this we can watch ... what we observe on this before we can see what happens on the surface of what we do know ... is will we get good weather can apply rules to all of our techniques we can actually shrunk this bill would actually done that scientific projections of how much oil has been leaking by and check for three weeks from the ruptured undersea well as range wildly ... from two hundred ten thousand gallons of oil per day ... to more than four billion gallons per day ... and aiding the massive Wills build remains the primary focus of BP ... and the Federal Government ...